Start learning →

Less than what share of incident solar radiation is photosynthetically active radiation?

A90 per cent
B50 per cent
C10 per cent
D2 per cent
Answer & Solution
Correct answer: B. 50 per cent
1. Only PAR can drive photosynthesis. 2. PAR is under 50 per cent of sunlight. 3. Plants capture just 2 to 10 per cent of PAR. _Source: syllabus Biology, Chapter 14, Ecosystem._
Practise this question with Quill — UPSC CSE →

Keep practising Environment & Ecology

Browse all Environment & Ecology questions for UPSC CSE, or explore more Environment topics.

Start a Environment & Ecology lesson →
Related questions
Wastewater bingoType the numberSort the treatment processesOrganic or inorganic impuritySlice the sewage wordsRun the treatment plantPop the water borne diseasesCatch the treatment steps